Dump-car.



G. L. LAWTON.

DUMP GAR.

APPLICATION FILED JUNE 2, 1911.

Patented Feb. 6, 1912.

4 SHEETS-SHEET 1.

3111101114501 I Q\r\gm\ 1215M MW GHMM COLUMBIA PLANOGRM-H cu.. WASHINGTON. u. c.

05L. LAWTON.

DUMP OAR. APPLICATION FILED JUNE 2, 1911.

Patented Feb. 6, 1912.

4 SHEETS-SHEET 2.

COLUMBIA I'LANOGRAPH CU.,\\'ASIHNUTON. u. c.

C. L. LAWTON.

DUMP GAR.

APPLICATION FILED JUNE 2, 1911.

l ,0 1 6 ,5 7O. Patented Feb. 6, 1912.

4 SHEETS-SHEET 3.

v COLUMBIA PLANOCIRAPH cm, WASHINGTON, n. c.

'0. L. LAWTON.

DUMP OAR. APPLICATION TILED JUNE 2, 1911.

Patented Feb. 6, 1912.

CHARLES L. LAWTON, OF HANCOCK, MICHIGAN.

DUMP-GAR.

Specification of Letters Patent.

Application filed June 2, 1911.

Patented Feb. 6, 1912'.

Serial No. 630,864.

To all whom it may concern Be it known that I, CHARLES L. LAWTON, a citizen of the United States, and a resident of Hancock, in the county of Houghton and State of Michigan, have invented a new and useful Dump-Car, of which the following is a specification.

This invention relates to cars especially designed to carry ore, coal or other minerals to points of discharge where they may be automatically unloaded, and it consists in a car having a novel hinged side door which will be automatically unlocked at the beginning of the unloading and be locked when the unloading is completed.

It further consists in a car so constructed that when a portion of its mechanism engages a properly constructed incline, the

car will automatically unload itself.

It further consists in the novel details of construction illustrated in the accompanying drawings and more specifically set forth in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a car. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a detail of the door on the same line on a larger scale. Fig. 4 is a section on the line 44 of Fig. 3. Fig. 5 is a detail of the lever mechanism on the line 22 of Fig. 1, on a larger scale. Figs. 6 and 7 are sections on the lines 66 and 7-7 of Fig. 5 respectively, on a larger scale. Fig. 8is a section on the line 2-2 of Fig. 1 showing the pivot, bars. Fig. 9 is an end elevation of the same. Figs. 10, 11 and 12 are details of the locks for the door.

Similar reference characters refer to like parts throughout the several views. 5

To unload dump-cars of the side-door type, the doors are unlocked and the opposite side of the car is raised to cause the load to slide out. It is necessary that each car be stationary while being unloaded and that the pivots of the body be under substantially the center of the load. These requirements cause great loss of time when many cars are to be dumped into one pocket or bin, and the height of the car is often such that the mine tunnels and entries to accommodate them are extremely expensive. A whole train of the cars shown in the drawings may be automatically unloaded while moving at considerable speed at any desired point, and the height of the cars is reduced to a minimum.

In connection with the car shown in the loader without engaging the same (Fig. 2).

The car shown in the drawings has a main frame formed by the side-beams 1 and the end-beams 1*, together with clamps 2 under the beams 1 to hold the axles 3 in position.

On these axles are revoluble the wheels 4 in the usual manner. cured across the top of the side beams and have vertical flanges 6 drilled to receive the pivot pins 7.v The body of the car has a stationary side 8, a hinged side door 9, ends 10 and a bottom or floor 11, all preferably of steel plates with the abutting edges of the stationary parts connected by the usual angle bars. The bottom rests directly on pairs of angle bars 12, which are also drilled to receive the pivot pins 7. (Figs. 8 and 9). The ends of the angle bars 12, opposite the pivots 7, may rest on pins 13 driven through holes in the flanges 6.

Underneath the car-body is slidably mounted a heavy bar 18, preferably rectangular in cross-section. having a wheel 19 on its outer end, which bar is so mounted that when this wheel runs up an incline 14, the

The T beams 5 are sewheel. will remain in substantially the same vertical plane. A collar 20 and cotter pin 21 limit the movement of the wheel on the bar. A plate 22 and guide 23 for the bar are secured to the bottom 11. A second plate 24, having down-turned lugs 25, in pairs, is also secured to the bottom near the outside edge, preferably by the same bolts 26 which secure the other guide 23. (Figs. 5, 6 and 7).

Secured to the left side-beam 1, (Figs. 5 and 7 is a bent plate 27 having cars 28 carrying the bolts 29. On these bolts at each side of each ear, are mounted the links 30. Between the right hand ends of each pair of links 30, and connected to the same by the bolts 31, are the links 32, which connect to the heavy bar 18, one on each side near its inner end, by the bolt 33. A third set of links 34, have their left or outer ends mounted on the bolts 35 extending through holes in the lugs 25 on the plate 23, and their right or inner ends extending between links and connected to the same by the bolts 36. There are thus two sets of links connecting the heavy bar 18 to the edge of the car-body and "to the side beam 1 farthest from the pivots 7, each set comprising one link 34, two links 30 and one link 32. When the wheel 19 rides up an incline 14, the links 30 swing up on the pivots 29 because of the connection between these links and the V The side 9 of the body may be reinforced by angle bars 39, and along the vertical. edges of the inner side are secured the bars 40 which are curved at their upper edges around the bolts 41. Upright bars 42 are a secured against the ends of the car and have holes at their upper ends for these bolts. A heavy plate 43 having an offset end 44 may be secured to each upper corner of the side 9, and may have a hole to receive the pivot pin 41 at that end. Washers 45 may be employed if desired. This construction furnishes a strong and durable hinge, but I do not desire to be limited to its use, as any other may be employed if desired.

A suflicient number of locking devices for the lower end of the hinged side 9 maybe mounted on the body of the car, four being shown but only one need be described. Referring to Figs. 5, 1O, 11 and 12, it will be noticed that the latch 50 is pivoted on the pin 51 carried by the short angle bars 52 se cured to the car bottom, and that, when the door is locked, the hook 53 enters a notch in a bar 54, preferably steel, extending along the lower edge of the door. The inner arm 55 of the latch is broad and normally rides on a plate 56 secured to the top of the adj a cent side-beam l. A spring 57 has an arm 58 secured against the inner side of the beam 1 and its free end 59 normally holds the arm 55 down. When the door side of the car swings down, the rear arm 55 is pressed toward the body, swinging down the outer arm 50 and moving the hook out of the notch in thebar 54. When free, the door 9 will swing outward or be pushed outward by the load in the car. When the car body resumes its original position, the door will swing back and its lower edge will strike the inclined upper edges of the hooks 53, forcing them down. WVhen the edge of the door is in contact with the edge of the bottom the springs 57 will swing the hooks 53 into operative position. Angle bars 60 may be secured along the edge of the bottom to reinforce the body.

It will thus be seen that a train of cars of this construction, passing over the top of a line of bins, can be unloaded into any desired bin; that no manual labor or supervision is necessary; and that, because the side of the car body is lifted by the incline under the traction of the engine, the pivots of the body can be placed far to one side, thus reducing the necessary total height of the car to a minimum.

Many changes may be made in the details of construction by skilled car builders, without departing from the spirit of my invention. Thus body rests 61 (Figs. 1 and 8) may be employed to support the body in addition to the pins 13. The inclines may be supplied with metal straps 62 for the wheel 19 to run on.

Having now explained my construction, what I claim as my invention and desire to secure by Letters Patent is 1. In a dump-car, the combination with the frame, axles, and wheels, of cross-beams mounted on the frame, pivots carried thereby, a car body, cross beams on the lower side of the body and formed with holes to receive the pivots, a heavy bar slidable on the lower side of the body, and having a wheel on its outer end, and links connecting the bar, the main frame and the body whereby the bar is caused to move longitudinally outward when the body is turned about its pivots.

2. In a dump-car, the combination with the frame, axles and wheels, of a body comprising bottom, stationary and movable sides and ends, cross bars connected to the bottom and frame, pivots connecting the cross bars near one side of the body, a slidable bar mounted transversely to the bottom of the car, a wheel on its outer end, links connected to the inner end of said bar, to the edge of the car and to theframe on the op posite side from the pivots, and to each other, whereby the bar is caused to slide outward as the body is turned on its ivots to keep the wheels on the bar in su stantially the same vertical line.

3. In a dump-car, the combination of the frame, axles and wheels, a body comprising bottom, stationary and movable sides and ends, cross bars extending upward from the frame and downward from the bottom, pins connecting said cross bars near one side of the body, a slidable bar mounted transversely of the bottom of the car near the middle, a wheel at the end opposite the pivots, a set of links connected to the side of the body near said wheel, a second set of links connected to the side of the frame adjacent said wheel and joined intermediate their ends to the ends of the first set of links, and

a third set of links connecting to the free ends of the links of the second set and to the inner end of said bar, the proportions of the links being such that when the car body is tilted on its pivots, the bar will slide outward and the wheel move up in a substantially vertical line.

4. In a dump-car, the combination of a frame, axles and wheels, of a car body pivoted at one side to said frame and having the side next the pivots adapted to swing open, a bar transversely slidable beneath the body, and connections between the bar, frame and body so proportioned that when the side of the body is swung upward, the outer end of the bar moves up in a substantially vertical line.

5. In a dump-car, the combination of a frame comprising longitudinal and cross bars, a ear-floor, cross bars connected to the lower side of said floor, pivots connecting the two sets of cross bars at one side of the frame, a slidable bar mounted transversely of said floor, an engaging member on the outer end thereof, and a series of links connected to the bar, to the car floor, to the frame, and to each other, whereby the bar is caused to slide outwardly as the floor turns on its pivots to keep the outer end of the bar in substantially the same vertical line.

6. In a dump-car, the combination of a frame, a car-flo0r pivoted at one side to said frame, a bar transversely slidable beneath the floor, and connections between the bar, frame and floor so proportioned that when the side of the floor is swung upward, the outer end of the bar moves up in a substantially vertical line.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHAS. L. LAWTON. Witnesses:

RICHARD T. MiiHLHAUsER,

W. M. BELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

